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block and blockchain are ready

yauhenip il y a 6 ans
Parent
7518635158
révision
56ceb6a9b0
19 fichiers modifiés avec 1081 ajouts et 0 suppressions
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  1. 13
    0
      .idea/compiler.xml
  2. 6
    0
      .idea/encodings.xml
  3. 14
    0
      .idea/misc.xml
  4. 124
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  5. 6
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  6. 703
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  7. 57
    0
      pom.xml
  8. 4
    0
      src/main/java/io/zipcoder/blue_coin_application/BlueCoinApplication.java
  9. 39
    0
      src/main/java/io/zipcoder/blue_coin_application/model/Block.java
  10. 49
    0
      src/main/java/io/zipcoder/blue_coin_application/model/Blockchain.java
  11. 13
    0
      src/main/java/io/zipcoder/blue_coin_application/utility/Encryption.java
  12. 22
    0
      src/test/java/io/zipcoder/blue_coin_application/TestBlock.java
  13. 31
    0
      src/test/java/io/zipcoder/blue_coin_application/TestBlockchain.java
  14. BIN
      target/classes/io/zipcoder/blue_coin_application/BlueCoinApplication.class
  15. BIN
      target/classes/io/zipcoder/blue_coin_application/model/Block.class
  16. BIN
      target/classes/io/zipcoder/blue_coin_application/model/Blockchain.class
  17. BIN
      target/classes/io/zipcoder/blue_coin_application/utility/Encryption.class
  18. BIN
      target/test-classes/io/zipcoder/blue_coin_application/TestBlock.class
  19. BIN
      target/test-classes/io/zipcoder/blue_coin_application/TestBlockchain.class

+ 13
- 0
.idea/compiler.xml Voir le fichier 

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.idea/encodings.xml Voir le fichier 

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.idea/misc.xml Voir le fichier 

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+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/blue_coin_application/model/Blockchain.java">
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+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/blue_coin_application/TestBlockchain.java">
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+            <element signature="imports" expanded="true" />
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+          </folding>
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+      </provider>
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+    </entry>
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+  </component>
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+  <component name="masterDetails">
616 
+    <states>
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+      <state key="ArtifactsStructureConfigurable.UI">
618 
+        <settings>
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+          <artifact-editor />
620 
+          <splitter-proportions>
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+            <option name="proportions">
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+              <list>
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+                <option value="0.2" />
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+              </list>
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+            </option>
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+          </splitter-proportions>
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+        </settings>
628 
+      </state>
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+      <state key="FacetStructureConfigurable.UI">
630 
+        <settings>
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+          <last-edited>Spring</last-edited>
632 
+          <splitter-proportions>
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+            <option name="proportions">
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+              <list>
635 
+                <option value="0.2" />
636 
+              </list>
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+            </option>
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+          </splitter-proportions>
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+        </settings>
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+      </state>
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+      <state key="GlobalLibrariesConfigurable.UI">
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+        <settings>
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+          <splitter-proportions>
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+            <option name="proportions">
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+              <list>
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+                <option value="0.2" />
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+              </list>
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+            </option>
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+          </splitter-proportions>
650 
+        </settings>
651 
+      </state>
652 
+      <state key="JdkListConfigurable.UI">
653 
+        <settings>
654 
+          <last-edited>1.8</last-edited>
655 
+          <splitter-proportions>
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+            <option name="proportions">
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+              <list>
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+                <option value="0.2" />
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+            </option>
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+          </splitter-proportions>
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+        </settings>
663 
+      </state>
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+      <state key="ModuleStructureConfigurable.UI">
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+        <settings>
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+          <last-edited>blueCoin</last-edited>
667 
+          <splitter-proportions>
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+            <option name="proportions">
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+              <list>
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+                <option value="0.2" />
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+                <option value="0.6" />
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+            </option>
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+          </splitter-proportions>
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+        </settings>
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+      </state>
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+      <state key="ProjectJDKs.UI">
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+        <settings>
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+          <last-edited>1.8</last-edited>
680 
+          <splitter-proportions>
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+            <option name="proportions">
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+              <list>
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+                <option value="0.2" />
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+            </option>
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+          </splitter-proportions>
687 
+        </settings>
688 
+      </state>
689 
+      <state key="ProjectLibrariesConfigurable.UI">
690 
+        <settings>
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+          <last-edited>Maven: antlr:antlr:2.7.7</last-edited>
692 
+          <splitter-proportions>
693 
+            <option name="proportions">
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+              <list>
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+                <option value="0.2" />
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+              </list>
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+            </option>
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+          </splitter-proportions>
699 
+        </settings>
700 
+      </state>
701 
+    </states>
702 
+  </component>
703 
+</project>

+ 57
- 0
pom.xml Voir le fichier 

@@ -0,0 +1,57 @@
1 
+<?xml version="1.0" encoding="UTF-8"?>
2 
+<project xmlns="http://maven.apache.org/POM/4.0.0"
3 
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
5 
+    <modelVersion>4.0.0</modelVersion>
6 
+
7 
+    <groupId>io.zipcoder</groupId>
8 
+    <artifactId>blueCoin</artifactId>
9 
+    <version>1.0-SNAPSHOT</version>
10 
+    <parent>
11 
+        <groupId>org.springframework.boot</groupId>
12 
+        <artifactId>spring-boot-starter-parent</artifactId>
13 
+        <version>1.5.3.RELEASE</version>
14 
+        <relativePath/> <!-- lookup parent from repository -->
15 
+    </parent>
16 
+    <properties>
17 
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18 
+        <start-class>io.zipcoder.blue_coin_application.BlueCoinApplication</start-class>
19 
+        <java.version>1.7</java.version>
20 
+    </properties>
21 
+    <dependencies>
22 
+        <dependency>
23 
+            <groupId>org.springframework.boot</groupId>
24 
+            <artifactId>spring-boot-starter-web</artifactId>
25 
+        </dependency>
26 
+        <dependency>
27 
+            <groupId>org.springframework.boot</groupId>
28 
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
29 
+        </dependency>
30 
+        <dependency>
31 
+            <groupId>org.springframework.boot</groupId>
32 
+            <artifactId>spring-boot-starter-test</artifactId>
33 
+            <scope>test</scope>
34 
+        </dependency>
35 
+        <dependency>
36 
+            <groupId>org.hsqldb</groupId>
37 
+            <artifactId>hsqldb</artifactId>
38 
+            <scope>runtime</scope>
39 
+        </dependency>
40 
+        <dependency>
41 
+            <groupId>com.bluecatcode.guava</groupId>
42 
+            <artifactId>guava-19.0-extended</artifactId>
43 
+            <version>LATEST</version>
44 
+        </dependency>
45 
+        <dependency>
46 
+            <groupId>javax.inject</groupId>
47 
+            <artifactId>javax.inject</artifactId>
48 
+            <version>1</version>
49 
+        </dependency>
50 
+        <dependency>
51 
+            <groupId>com.google.code.gson</groupId>
52 
+            <artifactId>gson</artifactId>
53 
+        </dependency>
54 
+    </dependencies>
55 
+
56 
+
57 
+</project>

+ 4
- 0
src/main/java/io/zipcoder/blue_coin_application/BlueCoinApplication.java Voir le fichier 

@@ -0,0 +1,4 @@
1 
+package io.zipcoder.blue_coin_application;
2 
+
3 
+public class BlueCoinApplication {
4 
+}

+ 39
- 0
src/main/java/io/zipcoder/blue_coin_application/model/Block.java Voir le fichier 

@@ -0,0 +1,39 @@
1 
+package io.zipcoder.blue_coin_application.model;
2 
+
3 
+import io.zipcoder.blue_coin_application.utility.Encryption;
4 
+
5 
+import java.util.Date;
6 
+
7 
+public class Block {
8 
+    private String hash;
9 
+    private String previousHash;
10 
+    private String data;
11 
+    private long timeStamp;
12 
+
13 
+    public Block(String data, String previousHash) {
14 
+        this.data = data;
15 
+        this.previousHash = previousHash;
16 
+        this.timeStamp = new Date().getTime();
17 
+        this.hash = calculateHash();
18 
+    }
19 
+
20 
+    public String getHash() {
21 
+        return hash;
22 
+    }
23 
+
24 
+    public String getPreviousHash() {
25 
+        return previousHash;
26 
+    }
27 
+
28 
+    public String getData() {
29 
+        return data;
30 
+    }
31 
+
32 
+    public long getTimeStamp() {
33 
+        return timeStamp;
34 
+    }
35 
+
36 
+    public String calculateHash() {
37 
+        return Encryption.applySha256(previousHash + Long.toString(timeStamp) + data);
38 
+    }
39 
+}

+ 49
- 0
src/main/java/io/zipcoder/blue_coin_application/model/Blockchain.java Voir le fichier 

@@ -0,0 +1,49 @@
1 
+package io.zipcoder.blue_coin_application.model;
2 
+
3 
+import com.google.gson.GsonBuilder;
4 
+
5 
+import java.util.ArrayList;
6 
+import java.util.List;
7 
+
8 
+public class Blockchain {
9 
+    private static List<Block> blockchain = new ArrayList<>();
10 
+
11 
+    public String chainToJson() {
12 
+        return new GsonBuilder()
13 
+                .setPrettyPrinting()
14 
+                .create()
15 
+                .toJson(blockchain);
16 
+    }
17 
+
18 
+    public static List<Block> getBlockchain() {
19 
+        return blockchain;
20 
+    }
21 
+
22 
+    public static void abbBlockToChain(Block block) {
23 
+        blockchain.add(block);
24 
+    }
25 
+
26 
+    public static Block getBlockFromChain(int i) {
27 
+        return blockchain.get(i);
28 
+    }
29 
+
30 
+    public static int getChainSize() {
31 
+        return blockchain.size();
32 
+    }
33 
+
34 
+    public static boolean isChainValid() {
35 
+        Block currentBlock;
36 
+        Block previousBlock;
37 
+        for (int i = 1; i < blockchain.size()-1; i++) {
38 
+            currentBlock = blockchain.get(i);
39 
+            previousBlock = blockchain.get(i-1);
40 
+            if(!currentBlock.getHash().equals(currentBlock.calculateHash())) {
41 
+                return false;
42 
+            }
43 
+            if(!previousBlock.getHash().equals(currentBlock.getPreviousHash())) {
44 
+                return false;
45 
+            }
46 
+        }
47 
+        return true;
48 
+    }
49 
+}

+ 13
- 0
src/main/java/io/zipcoder/blue_coin_application/utility/Encryption.java Voir le fichier 

@@ -0,0 +1,13 @@
1 
+package io.zipcoder.blue_coin_application.utility;
2 
+
3 
+import com.google.common.hash.Hashing;
4 
+
5 
+import java.nio.charset.StandardCharsets;
6 
+
7 
+public class Encryption {
8 
+    public static String applySha256(String input) {
9 
+        return Hashing.sha256()
10 
+                .hashString(input, StandardCharsets.UTF_8)
11 
+                .toString();
12 
+    }
13 
+}

+ 22
- 0
src/test/java/io/zipcoder/blue_coin_application/TestBlock.java Voir le fichier 

@@ -0,0 +1,22 @@
1 
+package io.zipcoder.blue_coin_application;
2 
+
3 
+import io.zipcoder.blue_coin_application.model.Block;
4 
+import org.junit.*;
5 
+
6 
+public class TestBlock {
7 
+
8 
+    @Test
9 
+    public void testCalculateHash() {
10 
+        Block block = new Block("data to encrypt", "dsgvcv4a534ghfgcvvw45ttb");
11 
+        int actual = block.calculateHash().length();
12 
+        Assert.assertEquals(64, actual);
13 
+    }
14 
+
15 
+    @Test
16 
+    public void testGetHash() {
17 
+        Block block = new Block("more data to encrypt", "esfvdghfw546w5rtsw465gvfd");
18 
+        String expected = block.calculateHash();
19 
+        String actual = block.getHash();
20 
+        Assert.assertEquals(expected, actual);
21 
+    }
22 
+}

+ 31
- 0
src/test/java/io/zipcoder/blue_coin_application/TestBlockchain.java Voir le fichier 

@@ -0,0 +1,31 @@
1 
+package io.zipcoder.blue_coin_application;
2 
+
3 
+import io.zipcoder.blue_coin_application.model.Block;
4 
+import io.zipcoder.blue_coin_application.model.Blockchain;
5 
+import org.junit.Assert;
6 
+import org.junit.Before;
7 
+import org.junit.Test;
8 
+
9 
+public class TestBlockchain {
10 
+
11 
+    @Before
12 
+    public void initialize() {
13 
+        Blockchain.abbBlockToChain(new Block("any data to add to block goes here", "0"));
14 
+        Blockchain.abbBlockToChain(new Block("probably transactions in our case", (Blockchain.getBlockFromChain(Blockchain.getChainSize()-1)).getHash()));
15 
+        Blockchain.abbBlockToChain(new Block("are you looking at my test, Mexi?", (Blockchain.getBlockFromChain(Blockchain.getChainSize()-1)).getHash()));
16 
+    }
17 
+
18 
+    @Test
19 
+    public void testAddBlockToChain() {
20 
+        int expected = 3;
21 
+        int actual = Blockchain.getChainSize();
22 
+        Assert.assertEquals(expected, actual);
23 
+    }
24 
+
25 
+    @Test
26 
+    public void testIsChainValid() {
27 
+        boolean actual = Blockchain.isChainValid();
28 
+        Assert.assertTrue(actual);
29 
+    }
30 
+
31 
+}

BIN
target/classes/io/zipcoder/blue_coin_application/BlueCoinApplication.class Voir le fichier


BIN
target/classes/io/zipcoder/blue_coin_application/model/Block.class Voir le fichier


BIN
target/classes/io/zipcoder/blue_coin_application/model/Blockchain.class Voir le fichier


BIN
target/classes/io/zipcoder/blue_coin_application/utility/Encryption.class Voir le fichier


BIN
target/test-classes/io/zipcoder/blue_coin_application/TestBlock.class Voir le fichier


BIN
target/test-classes/io/zipcoder/blue_coin_application/TestBlockchain.class Voir le fichier